should ravel
Regular verb: ravel - ravelled- ravelled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should ravel
you should ravel
he should ravel
we should ravel
you should ravel
they should ravel 	I should be ravelling
you should be ravelling
he should be ravelling
we should be ravelling
you should be ravelling
they should be ravelling	I should have ravelled
you should have ravelled
he should have ravelled
we should have ravelled
you should have ravelled
they should have ravelled	I should have been ravelling
you should have been ravelling
he should have been ravelling
we should have been ravelling
you should have been ravelling
they should have been ravelling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not ravel
you should not ravel
he should not ravel
we should not ravel
you should not ravel
they should not ravel 	I should not be ravelling
you should not be ravelling
he should not be ravelling
we should not be ravelling
you should not be ravelling
they should not be ravelling	I should not have ravelled
you should not have ravelled
he should not have ravelled
we should not have ravelled
you should not have ravelled
they should not have ravelled	I should not have been ravelling
you should not have been ravelling
he should not have been ravelling
we should not have been ravelling
you should not have been ravelling
they should not have been ravelling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I ravel?
should you ravel?
should he ravel?
should we ravel?
should you ravel?
should they ravel? 	should I be ravelling?
should you be ravelling?
should he be ravelling?
should we be ravelling?
should you be ravelling?
should they be ravelling? 	should I have ravelled?
should you have ravelled?
should he have ravelled?
should we have ravelled?
should you have ravelled?
should they have ravelled? 	should I have been ravelling?
should you have been ravelling?
should he have been ravelling?
should we have been ravelling?
should you have been ravelling?
should they have been ravelling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not ravel?
should you not ravel?
should he not ravel?
should we not ravel?
should you not ravel?
should they not ravel? 	should I not be ravelling?
should you not be ravelling?
should he not be ravelling?
should we not be ravelling?
should you not be ravelling?
should they not be ravelling? 	should I not have ravelled?
should you not have ravelled?
should he not have ravelled?
should we not have ravelled?
should you not have ravelled?
should they not have ravelled? 	should I not have been ravelling?
should you not have been ravelling?
should he not have been ravelling?
should we not have been ravelling?
should you not have been ravelling?
should they not have been ravelling?